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Dec 26, 2022

10 minutes

12 Amazing Benefits Of Crawl Space Encapsulation

For many homeowners, the crawl space beneath their homes can be an area of mystery. It’s a place that often gets neglected and forgotten about. Unfortunately, this neglect can lead to some serious problems down the road. That’s why it’s so important to maintain your crawl space with an encapsulation system properly. There are numerous benefits of crawl space encapsulation for homeowners, from improving air quality and energy efficiency to reducing the risk of mold and mildew growth. Let’s explore them in detail.

1. Reduce Humidity Issues

Humidity levels in your crawl space can play a large role in air quality throughout the rest of your home. Crawl space encapsulation helps by providing a vapor barrier to prevent moisture and humidity from entering, especially during the spring and summer when dampness becomes a big issue.

It will keep the air inside fresh and dry, improving air quality throughout your home and improving comfort levels for you and your family. Also, by reducing humidity levels, you can help prevent potential damage to your home’s structure and reduce the risk of mold or mildew growth.

2. Energy Efficiency

A damp crawl space can create a draft throughout your house, causing you to waste energy trying to keep it warm in the winter months. Also, there is a good chance you are losing air-conditioned air through the gaps in your crawl space. Encapsulation will help to reduce this draftiness and make your home more energy efficient by creating an insulated barrier between your living environment and the outdoors.

This can result in significant savings on utility bills throughout the year, making it a great investment for your home. Also, you can rest assured knowing you are doing your part to help the environment.

3. Improved Structural Integrity

Crawl space encapsulation can also help protect and reinforce your home’s structural integrity by decreasing long-term moisture damage. Any wood or metal beams in your crawl space will be protected from water, which can cause rotting and rusting. This can help prevent structural deterioration and keep your home safe and secure.

It will also make it much easier to identify potential issues that may arise, as you won’t have to worry about moisture getting in the way of inspecting your crawl space. You can go in and inspect for any damage or possible repairs that need to be done.

4. Pest Control

Moisture in a crawl space can create an inviting environment for insects and other pests, making it difficult to keep them away from your home. You may even notice signs of infestations in other parts of your house. With a proper crawl space encapsulation system, you can help reduce or even eliminate the possibility of pests entering your home and causing damage.

The vapor barrier will create an effective barrier between your living area and the outdoors, helping to keep pests at bay. You can also place pest control measures in the encapsulated space, such as traps and poisons, to reduce the chances of an infestation. This will help give you peace of mind knowing that your home is safe from pests and unwanted visitors.

Crawl space encapsulation using crawl space vapor barrier in the home's crawl space to eliminate moisture

5. Better Accessibility

Accessing your crawl space without a proper encapsulation system can be difficult. It can also be dangerous, as the moisture and humidity may cause slippery floors or mold growth. Also, you may not be able to reach certain areas of the crawl space, making it difficult to inspect for any potential problems.

A properly installed vapor barrier will make your crawl space more accessible and easier to navigate. You can walk around freely, knowing the floor joists are safe underfoot, and you won’t have to worry about getting lost or slipping on wet surfaces. You will be able to inspect the crawl space much more easily and identify any potential issues that may need to be addressed.

6. Better HVAC Performance

When air enters your crawl space, it can affect the performance of your HVAC system, reducing its efficiency and causing it to take longer to heat or cool your home. Also, the moist environment can lead to increased condensation within your ducts, which can cause dampness and mold issues throughout your home. Also, the moisture can lead to rusting of the HVAC system, causing it to malfunction and costing you money in repairs.

Encapsulating your crawl space will help protect your HVAC system from dampness and humidity, making it more effective and efficient. You can rest assured knowing that the air entering your home is properly filtered and not bringing in any more moisture. This can help you save money on utility bills and ensure your home stays comfortable all year round.

7. Lower Risk Of Allergens

When moisture enters your crawl space, it can create an environment where allergens thrive. This includes dust mites, fungus, bacteria, pollen, and other allergens that can cause allergic reactions in some people. Also, keeping these allergens from entering your living space can be difficult, as the dampness may cause them to spread throughout the house.

Encapsulating your crawl space will help reduce the risk of allergens entering your home. The vapor barrier will create an effective barrier between your living areas and the crawl space, stopping any allergens from entering. You can rest assured that your air quality is safe and free from unwanted airborne particles.

8. Improved Air Quality

The moisture in a crawl space can cause mold to grow and spread throughout your home, leading to an overall decrease in air quality. This can trigger allergies and asthma and make you uncomfortable in your home.

The crawl space vapor barrier can help improve indoor air quality by preventing further moisture from entering the area. This will also stop mold spores from spreading, leaving your air free from dust, mold, and other contaminants. You can breathe easily knowing that the air in your home is clean and free from any potential health risks.

9. Increased Home Value

A damp and moldy crawl space can be an off-putting factor when prospective buyers consider purchasing your property. They may think the area has been neglected or will require much work to get back into shape. Also, they may worry about the potential health risks associated with a damp space.

By encapsulating your crawl space, you can make it look and feel more inviting, which can help boost the value of your home. You can show potential buyers that you have taken care of the area and have taken proactive steps to protect your property. This can give them peace of mind, making them much more likely to purchase your home.

10. Eliminate Bad Odors

The damp environment of a crawl space can also lead to unpleasant odors that can travel through your home. It is due to the growth of mold and mildew, which can cause musty smells and other pungent odors. Also, if there is any standing water in the area, this can create an even more unpleasant smell.

Encapsulating your crawl spaces can help to eliminate these bad odors by stopping moisture from entering the area. The vapor barrier will also stop any smells from traveling through your home so that you can enjoy fresh air throughout your living space.

Crawl space sealing with spray foam insulation around the floor joists and foundation walls

11. Easily Add Radiant Heating

Keeping a crawl space encapsulated and dry makes it easier to add radiant heating. This is a great way to keep your home heated in the winter. Radiant heating systems are safer than baseboard heaters or forced air furnaces as there’s no risk of combustion and improved air quality overall. Plus, you can save money on energy bills by improving your home’s insulation.

Also, you can save money on installation costs. Installation of a radiant heating system in an encapsulated crawl space is easier and cheaper than installing the same system in an open, damp, or wet crawl space.

12. Extra Storage Space

You can reclaim and turn the area into a usable living space by encapsulating your crawl space. This can be used for extra storage or as an additional room in your home. An encapsulated crawl space allows you to make sure that whatever is stored there is kept safe from moisture, pests, and other contaminants.

Also, ductwork and wires for heating and air-conditioning systems are shielded from the elements. You can also install additional insulation in the walls and floors, making it easier to keep your home at a comfortable temperature year-round.

With these benefits of crawl space encapsulation, you can ensure that your home stays safe and comfortable while saving money on energy bills. A dry, sealed crawl space will help keep your family healthy and happy for years. Anyone can benefit from crawl space encapsulation with the right tools and know-how.


1. What Does A Crawl Space Encapsulation Cost?

The crawl space encapsulation cost varies depending on the crawl space size, materials needed, and the project’s complexity. Generally, crawl space encapsulation costs range from $3,000 to $5,000.

2. What is Included In The Crawl Space Encapsulation Process?

The process generally includes sealing off vents and other openings in the crawlspace, repairing any existing damage (such as mold or rot), covering the walls and floor with a specialized vapor barrier, and installing a dehumidifier to maintain proper humidity levels. Also, any drainage issues must be addressed, such as a sump pump or a French drain system.

3. How Long Does Crawl Space Encapsulation Take?

Typically, the installation of crawl space encapsulation takes 4–6 days for an average-sized space. The drying process can take up to 2 weeks, depending on the crawl space size. For larger spaces, the process may take longer.

4. Is Crawl Space Encapsulation Permanent?

Crawl space encapsulation is designed to last for many years with proper maintenance. You should check and inspect your vapor barrier system at least twice a year for any damage or wear and tear. Additionally, it’s important to keep the dehumidifier running regularly and change its filters at least every 3 months.

5. What Are The Signs Of Crawl Space Encapsulation Failure?

The most common sign of encapsulation failure is a musty odor or dampness in the crawl space. This can be caused by insufficient moisture barrier coverage, inadequate sealants, improper drainage, and not running the dehumidifier regularly. Additionally, mold growth is another sign that the encapsulation system is not functioning properly. If any of these signs are present, it’s recommended to inspect and repair your crawl space immediately.


Take the time to invest in crawl space encapsulation and reap all the benefits. This process will not only improve the air quality of your home but also save you money on energy bills, make your home more comfortable, extend the life of its structure, and protect stored items from moisture damage. Crawl space encapsulation is a simple task requiring minimal maintenance and presents a wide range of advantages you can enjoy for years to come. It is well worth the effort, so start planning your encapsulation project today!

Crawl Space Insider
Looking for excellent instructional materials on how to repair your crawl space and enhance the indoor air quality of your home? You’ve come to the right place! We cover everything from crawl space encapsulations, waterproofing, mold, insulation and more.